package com.cx.utils;

import lombok.extern.slf4j.Slf4j;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

@Slf4j
public class FileToBase64 {
    /**
     * <p>将文件转成base64 字符串</p>
     *
     * @param path 文件路径
     * @return
     * @throws Exception
     */
    public static String encodeBase64File(String path) {
        File file = new File(path);;
        try {
            FileInputStream inputFile = new FileInputStream(file);
            byte[] buffer = new byte[(int) file.length()];
            inputFile.read(buffer);
            inputFile.close();
            return new BASE64Encoder().encode(buffer).replaceAll("[\\s*\t\n\r]", "");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * <p>将base64字符解码保存文件</p>
     *
     * @param base64Code
     * @param targetPath
     * @throws Exception
     */
    public static void decoderBase64File(String base64Code, String targetPath) throws Exception {
        byte[] buffer = new BASE64Decoder().decodeBuffer(base64Code);
        FileOutputStream out = new FileOutputStream(targetPath);
        out.write(buffer);
        out.close();
    }

    /**
     * <p>将base64字符保存文本文件</p>
     *
     * @param base64Code
     * @param targetPath
     * @throws Exception
     */
    public static void toFile(String base64Code, String targetPath) throws Exception {
        byte[] buffer = base64Code.getBytes();
        FileOutputStream out = new FileOutputStream(targetPath);
        out.write(buffer);
        out.close();
    }

}